Google Cal to Zoom meeting

{
  "id": 1,
  "name": "Google Cal to Zoom meeting",
  "nodes": [
    {
      "name": "On clicking 'execute'",
      "type": "n8n-nodes-base.manualTrigger",
      "position": [
        0,
        330
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "name": "Zoom",
      "type": "n8n-nodes-base.zoom",
      "position": [
        380,
        410
      ],
      "parameters": {
        "topic": "=Meeting with {{$node[\"IF Zoom meeting\"].json[\"summary\"]}}",
        "authentication": "oAuth2",
        "additionalFields": {
          "duration": "={{(Date.parse($node[\"IF Zoom meeting\"].json[\"end\"][\"dateTime\"])-Date.parse($node[\"IF Zoom meeting\"].json[\"start\"][\"dateTime\"]))/(60*1000)}}",
          "settings": {},
          "timeZone": "={{$node[\"IF Zoom meeting\"].json[\"start\"][\"timeZone\"]}}",
          "startTime": "={{$node[\"IF Zoom meeting\"].json[\"start\"][\"dateTime\"]}}"
        }
      },
      "credentials": {
        "zoomOAuth2Api": {
...